The last time the Wimbledon champion played was the last US Open. She was shocked in the third round before the host Shelby Rogers.
The absence of Barty made Indian Wells Masters 2021 suffer great losses. Earlier, Naomi Osaka and Serena Williams also withdrew from this tournament.

Barty's coach, Craig Tyzzer, admitted that the world's No. 1 player may not attend the WTA Finals, where this athlete is the championship. The reason is because if attending the WTA Finals, Ashleigh Barty will have to be isolated for 2 weeks when returning to Australia to attend Australia Open early next year.
Barty would like to withdraw from Indian Wells Masters after she and Aryna Sabalenka and Barbora Krejcikova were confirmed to be available at this year's WTA Finals. 5 other names for the prestigious year -end tournament of WTA have not been determined. However, the 1-8 worldwide players have great chance to attend the tournament.
WTA Finals will start on November 8. The tournament took place in Guadalajara instead of Shenzhen as expected by Covid-19 epidemic. Last year, WTA Finals was not held.
In 2019, Bianca Andressescu was the Indian Wells Masters champion. In 2020, the tournament is not organized for disease reasons. This year, the Bianca Andrescu will compete with many prominent players such as Aryna Sabalenka, Karolina Pliskova, Iga Swiatek and Barbora Krejcikova. The replacement of Barty is Polona Hercog, the 482 -class player in the world Slovenia.